Lock.



10.845,613.- PATENTED FEB. 26, 19o?.

v Y. -Q. GALDWELL.

LOCK.

APPLICATION FILED MAE. 17| 1906.

. latch-bolt operative under such conditions by UNITED STATES PATENToEETCE.

YANCEY Q CALDWELL, or Pinus, TENNESSEE.

Lock.

Specification of Letters Patent.

Patented Feb. 26, 190'?.

1 Application ned March 17,1906. serial NQ. 306,623.

To all whom zltmwy con/cern;

Be it known that I, YANoEY Q. CALDWELL, a citizen of the United States,residing at Paris, in the county of Henry and State of Tennessee, haveinvented new and useful Improvements in Locks, of which the following isa specification'.

This invention relates to locks,- particularly of the mortise type,though the same structure can be embodied in a surface lock.

The improved lock is of the springless construction and embodies asliding bolt member which'serves in the dual capacity of a locking-bolt,in conjunction with other controlling mechanism, and also a door-latchor a rotatable knob and spindle.

The primary object of the invention is t provide a lock having a simpleconstruction of a durable nature and which may be cheaply produced.

In the drawings, Figure 1 is a plan view of' a lockwith a part of thecasing removed and embodying the features of the invention.

Fig. 2 is a similar view with a part of the casing removed and showingthe bolt projected. -Fig: 3 1s a transverse vertical section on the line3 3, Fig. 1 of the complete lock. Fig. 4

- is a detail perspective view of a portion of the lock. Fig. 5 is adetail perspective view of the particular form of key for the lock.

Similar numerals of reference are/employed to indicate correspondinglparts in the several views.

The numerals 1 and 2 represent front and back portions of the casing,having suitable width and length and ,preferably formed as separablesections for convenience 1n assembling the parts ofthe lock. Thefront l.of the lock has formed therein a boltway 3 eX-L tending.longitudinally-l thereof .and in alinement with a bolt-slot 4 in one.end of the said front. The upper part of the front 1 is also f providedwith an interior recess 5 offsubstantiallyv rectangularcontour andhaving a central arcuate counter-recess 6. .The recess 5 communicateswith the inner space of the front 1 adjacent totheboltway 3 and-isini'ftended to receive a bolt-controlling device, y which is actuated bya knob and spindle ina manner which will be-more fully hereinafterspecified.

. In both the -front and rear sections 1 and 2v of the lock-casing uppertransversely-alined openings 7 and 8 are formed, and directly below thesame and in vertical alin'ement' withl 'the centers thereofarekeyhole-openings A10 and 11. Within the openings 7 and S vand inclosedby the sections 1 and 2'is a rotatable sleeve 12, having a squaredopening 13 therethrough and an integral toothed segment 14. A squaredknob-spindle 15 is inserted through the opening 13', and on opposite'extremities of said spindle are knobs 16 and 17, the knob '17 beingremovable for obvious reasons.

The inner surface of each front and rear section 2 around the keyholes11 and 12 is formed with cavities, as at 18 and 1 9, and

through a portion of the cavity 18 a supporting-partition 20 is locatedand has a central circular seat 21 near its upper edge and carries belowthe said seat projecting pinsv 22 on opposite sides of the verticalcenter thereof,

which extend outwardly from opposite sides -of said partition.

` The partition 20 is formed by Ireducing an intermediate portion of abar or member 23, which is suitably secured 1n the casing against thefront section 1, and, in addition to the circular seat 21, the upperedge of the partition has recesses 24 on opposite sides of the seat topermit ample movement of a bolt-controlling member or tumbler 2 5,having a tubular fulcrum-knuckle 26 at its. inner extremity, which isfreely movablein the seat 21, and an outer segmental member 27,'

formed with a slot 28, extending therethrough in radial relation to theknuckleto allow the said segmental member to move over oppositevportions of the partition 20. The maximum movement of thebolt-controlling member ,or tumbler as an entirety ino posite directionsprovides for clearancep' the same from the under edge of a bolt 29,slidably disposed in the boltway 3 and having one end thereof movableinwardly and .outwardly through the bolt-slot 4. The bolt 29 in itsunder edge is formed with a curved. slot 30, merging into avertically-strai ht shoulder 31, against which the segmenta member 2 7of the tumblerl is adapted to contact. The

.shouldered portion 31 of the bolt depends below the rear part of thelower edge of said bolt to enable the segmental member 27 j tohave-positivecontact with said shoulder and also .to permit saidsegmental member to be fully withdrawn from the rear portion of the slot30 during certain operations ofthe bolt through the medium of theknob-spindle 15, the rotatable sleeve 12, and toothed segment 14. Thetoo'thed segment k14 is .held in continual mesh with a series ofrack-teeth 32m IOO IIO

the` upper edge of the'bolt 29, directly over the slot 30, and by thismeans thebolt can be' o erated by turning the knob-spindle.` The l() theo en ings and 11, and the stem 33 en.

ters t e 'tubular knuckle 26. The bit 34 is adapted .to contact witheither side edge of the rear portion of the segmental member 27, andwhen it is rotated the said segmental member or the bolt controller ortumbler complete is shifted from one side tothe other of the seat 21 inaccordance with the direction of movement of the key. The studv 35 onthe bit bears against the opposite side edges of the segmentalmember-'27 to insure a more positive operation of the controller ortumbler, and said stud iS in such position that it will pass theprojectingends of the pins 22. These pins 22 prevent the use of any keyother than one particularly formed for operating the lock and asjust'described, and 1t is obvious that a key with a wider bit would bestopped in its movement by the ms. 'p In ordinary operations of thelockor when it is undesirable to secure the bolt 29 against movement by theoperation ofthe bolt controller or tumbler, includi the segmental member27, rotation of the ole-spindle 15, will actuate the sleeve .12 and thetoothed segment 14, and consequently move or slide the bolt 29, themovement ofthe said bolt in opposite directions being of coursecontrolled by a corres `hen it is desired to lock the bolt againstmovement, the key is -rotated to bring the bit 34 thereof in contactwiththe bolt-controller or tumbler and to` throw 'the segmental memberv27 forwardly against the shoulder 31, such movement o'f-the tumblercausing the bolt 29 to be projected and b e retained in. proj ected'locked position until a lreverse-'movement of the key and the segmentalmember 27 is set up, and in this reverse movement the segmental memberstrikingtherear wall of t e slot 30 Willsimultaneously draw `the boltinwardly into the locksJ4 casing, and at the same time the' secondarymember 2.7 will be thrownl around, clear'of vided without the use of thelower edge of the bolt and .aga-in permit the latter tospindle, asbefore explained. v

From theforegoing itwill be seen that a p ositively-operatingv means fora bolt is pro- .springs or other fragile or readily-breakable parts andby the improvedl organization lock Lstructures may` vbe rendered'` moredurable and positive in their operation. f

Oneof the most essential features of the lock is thatin the operation ofthe bolt-con- 1 vid controller to engage the slot in t ponding rotationofthe knob-- -bolt by a movement of t opposlte direction.

`tion of the upper edge be operated solely by the knoba reduced stem to.may be used.

As a safety means the lock is also advantageous' in that a particularform of key is required to operate the same and means proed forpreventing the use of a key having abit other than the formprescribed.

Though the preferred form of the lock has been set forth, it is obviousthat changes in the proportions, dimensions, and minor detailsl may beresorted to without departing from the spirit of the invention.

Havin thus described the invention, what is claime is-e 1. In a lock,the combination of a casing, a

springless bolt sli'dably mounted inthe casing and having teeth in theintermediate portion e upper edge thereof, a 'slot in the lower edgedirectly underthe teeth, the slot having a front vertical wall, aknob-spindle carrying.

a toothed segment held in continual mesh with the teeth of the upperedge of the bolt, anda reversely-movable key-operated bolte lower edgeof the `bolt and operating to draw the bolt into the casing in itsreleasing movement, the controller engaging a portion of the frontvertical wall of the 2. In a lock, the combination of a casing, aspringless bolt slidably mounted in the casln and having a lower slotwith a front vertica wall, the front wall ofthe slot depending besame,and a key-operlow the rear wall ofthe ative controller disposed toengage the slot of s lot to hold the bolt in immovable locking `positionand also completely Aclearing the bolt when the latter is released.

the bolt and operating to lock the latter when projected by movement ofthe controller in one direction and releas' and indrawing the m'cliecontroller in an 3. In a lock, the'combi'nation of a'casing, aspringless bblt slidably mounted therein and provided .With teeth in theintermediate porthereof, and a slot in the lower portion directly underthe teeth,l the front wall of the slot being extended -downwardly'belowthe rear walll of the same,

a knob-spindle carrym a toothed se ent to engage the teeth of thge bolt,and agfllimbler movable in opposite directions and disposed to engagethe slot bolt to either lock the latter when in project' edv positionor'release said bolt, said tumbler being adapted to be engaged by a keyhaving. enter a part of the tumbler, and a bit to co erate with theremaining part of said tumb er.

'4. In. a lockLthe combination of a casing, a

in the lower portion ofthe springless bolt slidably mounted in thecasing and having teeth in the upper edge thereof, and a slot in thelower ortionlimmediately below the teeth, the said) slot having a frontwall depending below therear wall thereof, a

knob-spindlecarryin a toothed segment continually heldin mes with theteeth in the upper edge of the bolt, and a key-operated' segmentaltumbler movablein op osite d1- rections anddisposedto enter the s ot ofthe bolt and engage the Jfront depending wall of the said slot to holdthe bolt in locked position, the tumbler being cleared from .theslotfwhen the bolt is withdrawn or released.

-engaging both the knuckle andthe segmental 6. In a lock,.thecombination of a casing, a springless bolt slidably mounted in thecasing, a partition in the lower art of the casing'` having a seattherein an recesses on opposite sides ofthe seat, a bolt-controllerhaving a tubular knuchleto engage the seat, and al slotted segmentalmember movable'in oppojected site directions and dispos-ed to contactwith theunderportion of the bolt, and a key havy bit witlra projectionto engage the said segmental member of the controller. v

7. In -a lock, the combinationpf a casing, a

springless'bolt slidably mounted therein and having a slot in the loweredge thereof, a tumbler movably held to lengage the slot of the bolt andshiftable in opposite directions'in an .ing a reduced stemto iit inthelknuckle and a arcuate path, the free end of' the tumbler be-l l 4ingadapted to bear against the front wallof the slot of the bolt to lockthe latter in prodposition, said tumbler being also adapte to have itsopposite side edges enositions with relationz and adjacent to the lcrumof the tumbler and projecting in the ldirection of the path ofmovementof the bit ofthe key to prevent the insertion of any key gagedby a key, and pins located in opposite other than 'that particularlyprepared for opy erating'the tumbler.

In testimony whereof my hand in presence of two subscribing witvANcErAQ. CALDWELL.

Witnesses:

' A. B. MITCHENER, W. N.,BA1 :HAM.

I have hereunto set

